Replace OVERRIDE->override and FINAL->final since we now require C++11.

src/assert-scope.cc

Index: src/assert-scope.cc
diff --git a/src/assert-scope.cc b/src/assert-scope.cc
index 4c10fddb91243a7fbf4d8cfc371ca2e88a28dba4..e3ac31025cd878f524011571a93234c471f1cc8f 100644
--- a/src/assert-scope.cc
+++ b/src/assert-scope.cc
@@ -14,7 +14,7 @@ namespace internal {
 
 namespace {
 
-struct PerThreadAssertKeyConstructTrait FINAL {
+struct PerThreadAssertKeyConstructTrait final {
   static void Construct(base::Thread::LocalStorageKey* key) {
     *key = base::Thread::CreateThreadLocalKey();
   }
@@ -31,7 +31,7 @@ PerThreadAssertKey kPerThreadAssertKey;
 }  // namespace
 
 
-class PerThreadAssertData FINAL {
+class PerThreadAssertData final {
  public:
   PerThreadAssertData() : nesting_level_(0) {
     for (int i = 0; i < LAST_PER_THREAD_ASSERT_TYPE; i++) {